Definition Of Dye | Henna and Its Uses

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Definition Of Dye | Henna and Its Uses

The ability to perceive colour is a wonderful aspect of human eyes and dyes add colour to the goods we use. They have been in use since the ancient times.

The earliest authentic records of dyeing were found in the tomb painting of ancient Egypt. Colourings on mummy cements (wrapping) included saffon and indigo. They can also be seen in rock paintings in India.

Henna

Botanical name: Lawsonia inermis
Family: Lythraceae

Origin and Area of cultivation:

It is indigenous to North Africa and South-west Asia. It is grown mostly throughout India, especially in Gujarat, Madya Pradesh and Rajasthan.

Uses

An orange dye ‘Henna’ is obtained from the leaves and young shoots of Lawsonia inermis. The principal colouring matter of leaves ‘lacosone’ is harmless and causes no irritation to the skin. This dye has long been used to dye skin, hair and finger nails. It is used for colouring leather, for the tails of horses and in hair-dyes.
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Pulp Wood Definition and Its Manufacturing

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Pulp Wood Definition and Its Manufacturing

The term paper is derived from the word ‘papyrus’ a plant (Cyperus papyrus) that was used by Egyptians to make paper-like materials. Paper production is a Chinese invention.

The Chinese discovered the paper that was prepared from the inner bark of paper mulberry in 105 A.D. For a long time, the art of paper making remained a monopoly of the Chinese until Arabs learned the technique and improved it around 750 A.D. Invention of printing increased the demand for paper.
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Manufacture of Wood pulp:

Wood is converted into pulp by mechanical, and chemical processes. Wood of Melia azadirachta, Neolamarkia chinensis, Casuarina spp, Eucalyptus spp are used for making paper pulp.

Latex Definition and Its Uses

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Latex Definition and Its Uses

Botanical name: Hevea brasiliensis
Family: Euphorbiaceae

Origin and Area of cultivation:

It is a native of Brazil and was introduced outside its native range during the colonial period and has become an important cash crop. Asia contributed 90% of the world production. Kerala is the largest producer in India followed by Tamil Nadu.
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Uses

Tyre and other automobile parts manufacturing industries consume 70% of the rubber production. Rubber is used in manufacturing footwear, wire and cable insulations, raincoats, household and hospital goods, shock absorbers, belts, sports goods, erasers, adhesives, and rubber-bands Hard rubber is used in the electrical and radio engineering industries Concentrated latex is used for making gloves, balloons and condoms. Foamed latex is used in the manufacture of cushions, pillows and lifebelts.

Economically Useful Plants and Entrepreneurial Botany – Fibre

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Economically Useful Plants and Entrepreneurial Botany – Fibre

Botanically a fier is a long narrow and thickwalled cell.

Cotton

Botanical name: Gossypium spp.
Family: Malvaceae

Cotton is the world’s most important non-food commercial crop.

Origin and Area of cultivation:

It is one of the oldest cultivated crops of the world. It has been cultivated for about 8000 years both in new world and in old world. Commercial cotton comes from four cotton species: two from the new world and two from the old world.

  • G. hirsutum
  • G.barbadense are the New world species and
  • G. arboretum
  • G. herbaceum are the old world species. In India cotton is cultivated in Gujarat, Maharashtra, Andhra Pradesh and Tamil Nadu.

Uses

It is mainly used in the manufacturing of various textile, hosiery products, toys and is also used in hospitals.

Jute

Botanical name: Corchorus spp.
Family: Malvaceae

Origin and Area of cultivation:

Jute is derived from the two cultivated species

  • Corchorus capsularis and
  • Colitorius is of African origin whereas C. capsularis, is believed to be Indo-Burmese origin. It is an important cultivated commercial crop in Gangetic plains of India and Bangladesh.

Uses

It is one of the largest exported fire material of India. The jute industry occupies an important place in the national economy of India. Jute is used for ‘safe’ packaging in view of being natural, renewable, bio-degradable and eco-friendly product.

It is used in bagging and wrapping textile. About 75% of the jute produced is used for manufacturing sacks and bags. It is also used in manufacture of blankets, rags, curtains etc. It is also being used as a textile fire in recent years.
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Spices and Condiments | Condiment

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Spices and Condiments | Condiment

“Aroma attracts everyone”

History:

Spices were used extensively throughout the world for several thousands of years. Records of use of garlic and onion dates back 2500 years. Majority of the spices are native to Mediterranean region, India and South East Asian countries. Spices, especially pepper triggered the search for sea route to India and paved way for the exploratory voyages by Spanish and Portuguese.

Spices are accessory foods mainly used for flavouring during food preparation to improve their palatability. Spices are aromatic plant products and are characterized by sweet or bitter taste. Spices are added in minimal quantities during the cooking process. For example black pepper.

Condiments, on the other hand, are flavouring substances having a sharp taste and are usually added to food after cooking. For example, curry leaves. The following spices and condiment are discussed in detail.

Spices

Cardamom

Botanical name: Elettaria cardamomum
Family: Zingiberaceae

Origin and Area of cultivation:

It is indigenous to Southern India and Sri Lanka. Cardamom is called as “Queen of Spices”. In India it is one of the main cash crops cultivated in the Western Ghats, and North Eastern India.

Uses

The seeds have a pleasing aroma and a characteristic warm, slightly pungent taste. It is used for flavouring confectionaries, bakery products and beverages. The seeds are used in the preparation of curry powder, pickles and cakes. Medicinally, it is employed as a stimulant and carminative. It is also chewed as a mouth freshener.

Black Pepper

Botanical name: Piper nigrum
Family: Piperaceae
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Origin and Area of cultivation:

It is indigenous to Western Ghats of India. Pepper is one of the most important Indian spices referred to as the “King of Spices” and also termed as “Black Gold of India”. Kerala, Karnataka and Tamil Nadu are the top producers in India. The characteristic pungency of the pepper is due to the presence of alkaloid Piperine. There are two types of pepper available in the market namely black and white pepper.

Uses

It is used for flvouring in the preparation of sauces, soups, curry powder and pickles. It is used in medicine as an aromatic stimulant for enhancing salivary and gastric secretions and also as a stomachic. Pepper also enhances the bio-absorption of medicines.

Turmeric

Botanical name: Curcuma longa
Family: Zingiberaceae

Origin and Area of cultivation:

It is indigenous to Southern Asia India is the largest producer, consumer and exporter of turmeric. Erode in Tamil Nadu is the World’s largest wholesale turmeric market.

Uses

Turmeric is one of the most important and ancient Indian spices and used traditionally over thousands of years for culinary, cosmetic, dyeing and for medicinal purposes. It is an important constituent of curry powders. Turmeric is used as a colouring agent in pharmacy, confectionery and food industry. Rice coloured with turmeric (yellow) is considered sacred and auspicious which is used in ceremonies.

It is also used for dyeing leather, fire, paper and toys. Curcumin extracted from turmeric is responsible for the yellow colour. Curcumin is a very good anti-oxidant which may help fight various kinds of cancer. It has anti-inflammatory, anti-diabetic, anti-bacterial, anti-fungal and antiviral activities. It stops platelets from clotting in arteries, which leads to heart attack.

Chillies / Red Pepper

Botanical name: Capsicum annuum, C. frutescens.
Family: Solanaceae

Origin and Area of cultivation:

Capsicum is native to South America and is popularly known as chillies or red pepper in English. India is leading producer and exporter. C. annuum and C. frutescens are important cultivated species of chillies.

Uses

The fruits ofC.annuum are less pungent than the fruits of C.frutescens. C.annum includes large, sweet bell peppers. Long fruit cultivars of this species are commercially known as ‘Cayenne pepper’ which are crushed, powdered and used as condiment.

Chillies are used in manufacture of sauces, curry powders and preparation of pickles. Capsaicin is an active component of chillies. It has pain relieving properties and used in pain relieving balms. Chillies are a good source of Vitamin C, A and E.

Condiment

Tamarind

Botanical name: Tamarindus indica
Family: FabaceaeCaesalpinioideae
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Origin and Area of cultivation:

Tamarind is native of tropical African region and was introduced into India several thousand years before. It is cultivated in India, Myanmar, south asian countries and several African and Central American countries. Tamarind has long been used in Africa and in Southern Asia. The name tamarindus is of Arabian origin, which means “dates of India”. (tamar – dates; Indus – India).

Uses

It is used in flavouring sauces in the United States and Mexico. In India, the fruit pulp is major ingredients for many culinary preparations. Sweet tamarinds are sold as table fruits in India imported from Thiland and Malaysia.